Retractable window curtain device

ABSTRACT

A retractable window curtain device, the structural configuration of which is comprised of a top curtain rail, a middle curtain rail, a bottom curtain rail, a curtain, two pulleys, parallel thinness rods, rings, hooks, the first draw cord, the first vertical strings, the second draw cord, and the second vertical strings. The first draw cord is used to control the fixed top curtain rail and the activity of curtain that between the top and the bottom curtain rails. The second draw cord is used to control the middle curtain rail and the activity of curtain that between the middle and the bottom curtain rails. By way of foregoing invention to safely and conveniently assemble and disassemble the curtain that is stuck between the middle and bottom curtain rails.

TECHNICAL FIELD OF THE INVENTION

The invention herein relates to a retractable window curtain device.Especially use the second draw cord to flexibly control the curtain upor down. The invention not only can achieve the purpose of safely andconveniently assembling and disassembling the curtain, but also make theretractable window curtain device has many different applications.

BACKGROUND OF THE INVENTION

Traditional window curtains use one ball chain draw cord that isinstalled on a pulley to draw curtains; however, these kinds of windowcurtains that are fixed on the top of windows not only cannot easilyassemble or disassemble curtains, but also have to concern about safetyif position of windows are higher. In order to solve these problems, theapplicant proposed a retractable window curtain device that has simplestructure and low cost.

The retractable window curtain device is using the second draw cord toflexibly control the activity of middle curtain rail to safely andconveniently assemble and disassemble the curtain that is stuck on themiddle curtain rail by hook and loop fastener tapes or other adhesivedevices. The retractable window curtain device has many differentapplications, such as adjusting light, instead of stickers, being ascreen, an advertising board, a scenery . . . and so on. Therefore, thestructural design of the retractable window curtain is very originality.Until now, there is no similar product put on markets.

SUMMARY OF THE INVENTION

The retractable window curtain device includes: a top curtain rail thatis fixed on top of windows; a middle curtain rail that is stuck on topof windows by an adhesive device; a bottom curtain rail that is stuck onend of curtain by an adhesive device; a curtain that is stuck betweenthe middle and bottom curtain rails by adhesive devices; two pulleysthat are fixed on one side of the top curtain rail; a plurality ofparallel thinness rods that are fixed on curtain for same distance; aplurality of rings that are joined to the curtain with hooks; a firstdraw cord that is installed on a pulley works with the pulley and atransmission shaft to make the first vertical string through rings todraw or lay down the curtain; and a second draw cord that is installedon the other pulley works with the pulley and a transmission shaft tomake the middle curtain rail up or down. Combining these components, thefirst draw cord can control the activity of curtain between the top andbottom curtain rails; the second draw cord can control the activity ofcurtain between the middle and bottom curtain rails. By way of foregoinginvention to safely and conveniently assemble and disassemble thecurtain that is stuck between the middle and bottom curtain rails.

For better choice, the material of curtain is cloth.

For better choice, the material of curtain is wood.

For better choice, the material of curtain is bamboo wood.

For better choice, the adhesive device is a hook and loop fastener tapethat is produced by any kind of material.

For better choice, the first and second draw cords are ball chain drawcords that are produced by any kind of material.

For better choice, the first and second vertical strings are any kind ofmaterial.

For better choice, the hooks are joined on intersections of eachparallel thinness rod and the first vertical string.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a view of structure of traditional window curtain that drawscurtains to left and right.

FIG. 2 is a view of back structure of traditional window curtain thatdraws curtains up or down.

FIG. 3 is a view of back structure of the inventive retractable windowcurtain device.

FIG. 4 is a view of using state of the retractable window curtaindevice.

DETAILED DESCRIPTION OF THE INVENTION

Referring to FIG. 1, this is a structure of traditional window curtainthat draws curtains to left or right. The traditional window curtain 1that draws curtains to left or right is manually pulling ball chain drawcord 13 to make rollers of pulleys 11 roll into the track of tubularframe 12. Then the curtains 10 start to retrace to left and right sides.

Referring to FIG. 2, this is a back structure of traditional windowcurtain that draws curtains up or down. This figure is one kind ofstructure of traditional window curtain that draws curtains up or down.A traditional window curtain 2 that draws curtains up or down ismanually pulling ball chain draw cord 26 to make rollers of pulleys 21roll and then the vertical strings 22 that in the tubular frame 20 willdraw the curtain 27 up or down. In the FIG. 2, the curtain 27 is fixedby parallel thinness rods 23. Hooks 24 that are used to connect rings 25are joined on intersections of each vertical string 22 and parallelthinness rod 23, and vertical strings 22 are through rings 25 to makethe curtain 27 smoothly up or down. Due to above-mentioned the twotraditional window curtains have problems of unsafely and inconvenientlyassemble and disassemble curtains, the applicant proposed theretractable window curtain device with double pull strings.

Referring to FIG. 3, this is the back structure of the inventiveretractable window curtain device. The figure is one of appearances ofthe retractable window curtain device. The invention of retractablewindow curtain device 3 is to improve the traditional window curtainthat draws curtains up or down in FIG. 2 to have double pull strings andthe middle curtain rail 31 that can be flexibly controlled. When pullsthe first draw cord 34, the pulley 33 will roll and then the firstvertical string 37 on the top curtain rail 30 will be affected. Withworking of the first vertical string 37, parallel thinness rods 36,hooks 39 and rings 391, the bottom curtain rail 32 will be steadilypulled up or down, and then the curtain 392 will also be steadily pulledup or down. (The working action of the first vertical string 37 is lethooks 39 on parallel thinness rods 36 join rings 391, and the firstvertical string 37 will through rings 391 to bind the bottom curtainrail 32.) When pulls the second draw cord 35, the pulley 33 will roll.The second vertical string 38 that suspended between the top curtainrail 30 and the middle curtain rail 31 will make the middle curtain rail31 to steadily draw the curtain 392 from top to end, and this is thedesign of safely and conveniently assembling and disassembling thecurtain.

Referring to FIG. 4 to more understand technical characteristics of thisinvention. The FIG. 4 is the illustration for using the retractablewindow curtain device 4, and the description as follows:

The structure of the retractable window curtain device 4 in FIG. 4 is assame as the structure in FIG. 3, and the purpose in FIG. 4 is showingthe using status of the retractable window curtain device 4. Theretractable window curtain device 4 is to improve the traditional windowcurtain that draws curtains up or down in FIG. 2 to have double pullstrings and the middle curtain rail 41 that can be flexibly controlled.When pulls the first draw cord 44, the pulley 43 will roll and then thefirst vertical string 47 on the top curtain rail 40 will be affected.With working of the first vertical string 47, parallel thinness rods 46,hooks 49 and rings 491, the bottom curtain rail 42 will be steadilypulled up or down, and then the curtain 492 will also be steadily pulledup or down. (The working action of the first vertical string 47 is lethooks 49 on parallel thinness rods 46 join rings 491, and the firstvertical string 47 will through rings 491 to bind the bottom curtainrail 42.) When pulls the second draw cord 45, the pulley 43 will roll.The second vertical string 38 that suspended between the top curtainrail 40 and the middle curtain rail 41 will make the middle curtain rail41 to steadily draw the curtain 492 from top to end, and this is thedesign of safely and conveniently assembling and disassembling thecurtain.

To sum up, the invention is improving problems of inconveniently andunsafely disassembling or assembling curtains of traditional windowcurtains. The retractable window curtain device has double pull stringsand the middle curtain rail that can be flexibly controlled to make theretractable window curtain device has many different applications.

In summation of the foregoing section, since the retractable windowcurtain device of the invention herein is original and innovative instructure, capable of achieving its claimed objectives, and meets allnew patent application requirements, the present invention is submittedfor review and the granting of the commensurate patent rights.

1. A retractable window curtain device, comprising: a top curtain rail,which is fixed on top of window; a middle curtain rail, which is stuckon top of windows by an adhesive device; a bottom curtain rail, which isstuck on end of curtain by an adhesive device; two pulleys, which arefixed on one side of the top curtain rail; a plurality of parallelthinness rods, which are fixed on curtain for same distance; a pluralityof rings, which are joined to the curtain with hooks; a first draw cordthat is installed on a pulley works with the pulley and a transmissionshaft to make the first vertical string through rings to draw or laydown the curtain; and a second draw cord that is installed on the otherpulley works with the pulley and a transmission shaft to make the middlecurtain rail up or down. Combining these components, the first draw cordcan control the activity of curtain between the top and bottom curtainrails; the second draw cord can control the activity of curtain betweenthe middle and bottom curtain rails. By way of foregoing design toachieve the purpose of safely and conveniently assembling anddisassembling the curtain that is stuck between the middle and bottomcurtain rails. The retractable window curtain device of claim 1 whereinthe material of curtain is cloth.
 2. The retractable window curtaindevice of claim 1 wherein the material of curtain is wood.
 3. Theretractable window curtain device of claim 1 wherein the material ofcurtain is bamboo wood.
 4. The retractable window curtain device ofclaim 1 wherein the adhesive device is a hook and loop fastener tapethat is produced by any kind of material.
 5. The retractable windowcurtain device of claim 1 wherein the first and second draw cords areball chain draw cords that are produced by any kind of material.
 6. Theretractable window curtain device of claim 1 wherein the first andsecond vertical strings are any kind of material.
 7. The retractablewindow curtain device of claim 1 wherein the hooks are joined onintersections of each parallel thinness rod and the first verticalstring.